On 2022-08-21 15:15 (-4), Bald Eagle wrote:
> MichaelJF <fri### [at] t-onlinede> wrote:
> 
>>  Now I
>> found a database of 120.00 stars published by the European Space Agency
>> (Hipparcos-Catalogue). So the next experiment is to try to understand
>> this data and to project them at my sky-sphere.

Although I'm rather leary of the stellar distances in that catalog, that
shouldn't make any difference for your present purpose.

> Cousin Ricky has you covered:
> 
>
https://news.povray.org/povray.object-collection/thread/%3Cweb.5a7fae1be3b4c4165cafe28e0@news.povray.org%3E/

The URL in that thread is still down.  In the meantime, the module is
available at:
  https://github.com/CousinRicky/POV-BrightStar5

There is some discussion of projection in that thread.

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